<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
	<style>
#div1 div, #div2 div{ width:200px; height:200px; border:1px #000 solid; display:none;}
.active{ background:red;}
</style>
</head>
<body>
<script>
window.onload = function(){
	var t1 = new Tab("div1");
	t1.init();
	var t2 = new Tab("div2");
	t2.init();
	t2.autoPlay();
}

function Tab(id){
	this.oParent = document.getElementById(id);
	this.aInput = this.oParent.getElementsByTagName("input");
	this.aDiv = this.oParent.getElementsByTagName("div");
	this.iNow = 0;
}

Tab.prototype.init = function(){
	var This = this;
	for(var i=0; i<this.aInput.length;i++){
		this.aInput[i].index = i;
		this.aInput[i].onclick=function(){
			This.change(this);
		}
	}	
}

Tab.prototype.change = function(obj){
	for(var i=0; i<this.aInput.length;i++){
		this.aInput[i].className="";
		this.aDiv[i].style.display="none";
	}
	obj.className="active";
	this.aDiv[obj.index].style.display="block";
}

Tab.prototype.autoPlay = function(){
	var This = this;
	
	setInterval(function(){
		
		if(This.iNow == This.aInput.length-1){
			This.iNow = 0;
		}
		else{
			This.iNow++;
		}
		
		for(var i=0;i<This.aInput.length;i++){
			This.aInput[i].className = '';
			This.aDiv[i].style.display = 'none';
		}
		This.aInput[This.iNow].className = 'active';
		This.aDiv[This.iNow].style.display = 'block';
		
		
	},2000);
}
</script>
<div id="div1">
	<input class="active" type="button" value="1">
	<input type="button" value="2">
	<input type="button" value="3">
	<div style="display:block">11111</div>
	<div>22222</div>
	<div>33333</div>
</div>
<div id="div2">
	<input class="active" type="button" value="1">
	<input type="button" value="2">
	<input type="button" value="3">
	<input type="button" value="4">
	<div style="display:block">11111</div>
	<div>22222</div>
	<div>33333</div>
	<div>44444</div>
</div>
</body>
</html>
